Many beginners see “arbitrage” and think it’s complicated. In reality, spot-futures arbitrage is like “moving bricks.” Simply put, you buy Bitcoin on the spot market while shorting an equal amount of Bitcoin on the futures market at the same time. Since the spot and futures prices tend to converge over the long run, this operation itself doesn’t profit from the price spread. What you really earn is the “funding rate” paid by long positions to short positions in the futures market.

What is the funding rate? It’s a fee in the futures market used to balance long and short positions. Periodically (usually every 8 hours), either longs or shorts pay the counterparty. In a bull market, longs are more prevalent, so the funding rate is usually positive—e.g., 0.03% means that every 8 hours, people holding long positions pay 0.03% to those holding short positions. If you short the futures, you basically get this money for free. Take the recent example of BTC rising 1.8% in a day: if spot rises and futures follow, then shorting futures will lose on the price spread—but spot longs will profit from the spread, and the two offset each other exactly. The only stable income comes from the funding rate.

More intuitive with an example: Suppose you have $10,000. You buy $10,000 worth of BTC on Binance spot, and at the same time open a $10,000 short position on the futures contract. Now BTC rises to $10,100: your spot profit is $100, while your futures loss is $100, so your total P&L is flat. But at each settlement, if the funding rate is 0.03%, your short position earns $3; three times a day would be $9, which is roughly an annualized return of over 10%. This is why when the market moves violently, many people like to do this—although volatility is big, it doesn’t affect you as long as you have enough cash to cover the margin.

Of course, this isn’t risk-free. In extreme market conditions, futures contracts may experience “price spikes” that can trigger a forced liquidation. So beginners should start with small positions to practice and understand the rules before operating. Also, funding rates can sometimes be negative—e.g., in a bear market where shorts are crowded, you might have to pay instead. So you should only open positions when the funding rate is positive and high. In summary, basis (cash-and-carry) arbitrage is suitable for people who want to steadily earn “rent” from the market, but it requires patience and discipline.

🔗 Content generated automatically by AI for learning and discussion only ⚠️ Not investment advice; contracts carry risk